Double piston spring hinge eyeglasses



FIG. 1 is a perspective view of double piston spring hinge eyeglasses, showing my new design;

FIG. 2 is a front elevational view of FIG. 1;

FIG. 3 is a rear elevational view of FIG. 1;

FIG. 4 is a right side elevational view of FIG. 1 when viewed from the front, the other side being a mirror image;

FIG. 5 is a top plan view of FIG. 1; and,

FIG. 6 is a bottom plan view of FIG. 1. 

The ornamental design for a double piston spring hinge eyeglasses, as shown and described. 